| Katherine Richards Developments Ltd | Construction | 2026 |
| Katie Ashe Limited | Other services | 2018 |
| Kaye Consultancy Services Limited | Health & social care | 2022 |
| Kays Catering Limited | Hospitality | 2005 |
| Kaziu Barber Ltd | Other services | 2018 |
| KBC Properties Limited | Real estate | 2025 |
| KBS Haulage Limited | Transport & logistics | 2024 |
| Kclw Ltd | Other services | 2021 |
| KD Properties Southport Ltd. | Real estate | 2018 |
| KD Repro Ltd | Wholesale & retail | 1985 |
| KDL92 Services Limited | Administrative & support | 2023 |
| Keane Transport Limited | Transport & logistics | 2011 |
| Kebabish Grill Southport Ltd | Hospitality | 2025 |
| Keegan Mcdowell (Haulage) Limited | Transport & logistics | 1980 |
| Keith Dodd Accountants Ltd | Professional & scientific | 2003 |
| Kelsec Global Limited | Professional & scientific | 2025 |
| Kempf Enterprises Limited | Wholesale & retail | 2013 |
| Kenny Fisher Shipping EOT Limited | Financial services | 2024 |
| Kenny Fisher Shipping Limited | Transport & logistics | 2004 |
| Kenny Grace Ltd | Wholesale & retail | 2018 |
| Kensington Car Wash Ltd | Other services | 2016 |
| Kensingtons Hair and Beauty Ltd. | Other services | 2011 |
| Kenwood Grange Management Company Limited | Households | 2003 |
| Keran Lewis Limited | Professional & scientific | 2007 |
| Kerr Paton Lodge Management Company Limited | Households | 1991 |
| Kershaws Frozen Foods Limited | Manufacturing | 1974 |
| KES Consulting Group Limited | Professional & scientific | 2024 |
| Kevin Earle Ltd | Professional & scientific | 2006 |
| Kevin Flinn Associates Limited | Professional & scientific | 2012 |
| Key Stage Photography Limited | Other services | 2019 |
| Keyspace Property Management Limited | Real estate | 2026 |
| KGN Hvac Ltd | Construction | 2023 |
| Khan Fish and Chips Ltd | Hospitality | 2025 |
| Khepri Investments Limited | Financial services | 2025 |
| Khurshid Convenience Store Limited | Wholesale & retail | 2021 |
| Kidd Developments Ltd. | Construction | 2014 |
| Kiddie (Holdings) Limited | Extraterritorial | 2013 |
| Kiddie Aluminium Solutions Ltd | Extraterritorial | 2013 |
| Kiddie Fit OUT Solutions Ltd | Extraterritorial | 2013 |
| Kidogo Ltd | Real estate | 2017 |
| Kilbrogan Court Management Company Limited | Households | 2002 |
| Kimberella Business Services Ltd | Administrative & support | 2026 |
| Kimberella Ltd | Financial services | 2018 |
| Kimberella Properties Ltd | Real estate | 2025 |
| KIN Holdings Ltd | Financial services | 2025 |
| Kinda Homes Limited | Real estate | 2014 |
| Kinderworld Holdings Limited | Financial services | 2020 |
| Kinderworld Limited | Education | 1995 |
| Kinetic Edge (Southport) Ltd | Arts & recreation | 2025 |
| Kinetics Personal Training Services (UK) Limited | Arts & recreation | 2010 |
| Kinexit Ltd | Information & communication | 2020 |
| Kingfisher (Brixham) Limited | Extraterritorial | 2012 |
| Kingpost Homes Limited | Construction | 1997 |
| Kingswood Park (Birkdale) Management Company Limited | Households | 2001 |
| Kiril PT Ltd | Other services | 2014 |
| Kirk Media Works Limited | Professional & scientific | 2024 |
| Kirkby Lonsdale Bathrooms Limited | Wholesale & retail | 2019 |
| Kirkby PCN Limited | Health & social care | 2023 |
| Kishmish Go Limited | Hospitality | 2018 |
| Kitchen Chronicles Ltd | Hospitality | 2019 |
| Kitchen Images Ltd | Wholesale & retail | 2008 |
| Kitchen Services (Southport) Limited | Manufacturing | 2010 |
| Kitching Ltd | Information & communication | 2018 |
| Kitepark Limited | Professional & scientific | 1983 |
| Kiwi Corp Ltd | Information & communication | 2019 |
| KKC (Holdings) Ltd | Other services | 2020 |
| KKC Facilities Management UK Ltd | Other services | 2003 |
| KKC Properties Ltd | Extraterritorial | 2016 |
| Kkhsales Ltd | Wholesale & retail | 2025 |
| KL3 Limited | Real estate | 2013 |
| KLG Care Limited | Health & social care | 2016 |
| KLJ Farms Ltd | Agriculture & fishing | 2025 |
| KLM Inns Ltd | Hospitality | 2014 |
| Klomps-C. Software Engineering Ltd | Wholesale & retail | 2018 |
| KMD Automotive Limited | Wholesale & retail | 2025 |
| KMM Law Limited | Professional & scientific | 2018 |
| Kmsh Group Ltd | Hospitality | 2026 |
| Knight Meats Limited | Extraterritorial | 1999 |
| Koala Kids Ltd | Wholesale & retail | 2007 |
| Koara Limited | Real estate | 2017 |
| Kobald Mining Services Limited | Mining & quarrying | 2015 |
| KOD Properties Ltd | Real estate | 2021 |
| Kokiel I Marcyk 4 Ltd | Transport & logistics | 2024 |
| Koko Organics Limited | Hospitality | 2009 |
| Komodo Tattoo Limited | Arts & recreation | 2025 |
| Kong Group (Liverpool) Ltd | Wholesale & retail | 2024 |
| Kong Performance & Auto Mechanics Ltd | Wholesale & retail | 2020 |
| Konig Developments Limited | Construction | 2025 |
| Korean Kitchen Ltd | Hospitality | 2020 |
| Korkut Property Management Ltd | Real estate | 2023 |
| Kovv PR27HE Ltd | Construction | 2026 |
| Kovv PR99BB 2 Ltd | Real estate | 2026 |
| Kovv PR99BB Ltd | Real estate | 2026 |
| Krec Ltd | Hospitality | 2026 |
| Kronos Commerce Ltd | Wholesale & retail | 2025 |
| KRR Management Services Ltd | Other services | 2025 |
| KRY Services Limited | Health & social care | 2020 |
| Krygiel Engineering Ltd | Other services | 2007 |
| KS Hospitality Group Ltd | Hospitality | 2026 |
| Ks-Hgv Ltd | Transport & logistics | 2018 |